Chainsaw Repair

OK I am looking for some help
 I have a older husky 55 rancher, that I bought new back in 2001, and its been a problem saw ever since it seems
 goes from running great to crap in a heat beat
 long story short, its been in several Husky dealer shops for warranty work as well as out of pocket repairs(what I spent I should have just bought a new saw)
 any ways it was in a dealer last winter, they rebuilt the carb, and got it runnibng
 today I needed to cut a fallen tree up, and it started(new gas) easy, then started running wide open throttle all by its self,
 so wide open , kill switch would even work, had to pull the choke out and that managed to shut it down!

 what I found when I took top cover off was ONLY had one carb screw in it, and it was just not in its hole
 apparently last guy to work on it stripped out both screw holes, and guess this one screw was holding the carb on when he gave it bacl to me, but the vibrations , it walked out, thus running bad!

 so questions
 how do I get new screws to work, is tehre abything I can place inn the screw holes to snug them up enough to hold? was thinking like a permatex form a gasket or like. loc tite?

 I got new screws, local shop had them, (not where it was at last, that guy has saw for 4 months and now this, so?/)
 and last, when I took air filter off to see carb, the linkage for the throttle and choke came off, and I cannot find out how they go back on
 looking at parts diagrams, I cannot even find one that shows the throtle linkage at all
 I am not sure if I lost a part ror not, but where it goes through the cover to the trigget, what is supposed to be there??
 I have a small clip that fills the slot, but do not see how it can hold the linkage in place
 any and all help would be great

thanks for the speedy reply
 I found a plactis piece that the linkage slips into between the handle and the trigger, guess it fell off and I didn't notice, found it , and got that figured out
 put it backtogether then it stopped springing back, the return spring on the throttle flap shaft came off
 so I ended up pulling the shaft out and re doing the spring
 BUT I didn't notice the small notch on the flap or the hole in it, part number

502114401 
 502114401  THROTTLE FLAP



would anyone know what position it has to be in to be correct?
I guess I should have paid better attention, but just didn't see it, my eyes don't work very well on small parts no more
and sine the screws are stripped, I don't want to have to keep taking apart and playing if I can help it
 thanks, again


this was the part I lost but found, the plastic cap like part too in case anyone wants to see it!

http://www.ereplacementparts.com/throttle-push-rod-cpl-p-616489.html

thanks, its the 2 that hold teh carb to the intake
I melted some plactic and had it drip into the holes, seems to be holding tight, but plan to replace the intake, and will replace those parts too then while its apart!
 I like to use new replacement parts when I can, always fell while its apart why not! as long as prices don't get nuys any how LOl

Dont forget to replace the impulse pipe on these.  http://northwoodsaw.com/store/index.php?l=product_detail&p=1024

Replacement Impulse Pipe for Husqvarna models 36, 40, 41, 45, 49, 50, 51, 55, 55 Rancher. Jonsered 490, 590, 625, 630, 2036, 2040, 2041, 2045, 2050, 2054..

Replaces OEM 505 31 07-51    505310751 

Cool, I like those saws! We have figured out a way to get gobs more get-up-and-squirt out of those little saws. If interested in how, let me know, I will post details when you are ready. Please listen to all the previous posts about intake boot/collar, impulse grommet, and replacing that crap piece of plastic the carb bolts to. You can also use an m4 brass threaded insert and drill out a new plastic piece so you never strip the plastic out again. The inserts are in the Husqvarna tools catalog or you can get them from McMaster Carr cheaper.