Chainsaw Repair

No I didn't check anything. I ordered a new set of rings last night. Would it hurt anything if I ran it with rings with too much end gap for a few days until I get the correct rings? I noticed in the pictures the rings I ordered have a shelf or notch at the end so when they butt against the locating pin the outside edge of the ring overlaps the pin. The rings I just installed were cut square strait across allowing a gap where the pins are.What is the correct end gap? The cylinder is worn a lot. In some places the chrome plating is worn off. But there was no score marks, everything was really clean. I wasn't expecting super high compression, but I think it should be more then 90 lbs. It was late and I was tired when I put it together last night.  Thinking about it now There is no way it could have good compression with the rings leaving the locating pins exposed. That's a really big hole for the gasses to escape. It would take a really badly scared piston to have gaps that big.