Had one for a year and just replaced it. Heard about the problem here and so I ckecked it out. Kid of hard to tell but I think mine did egg shape up on me. I like them even still and did put the same kind on the new strings. They were supposed to have the problem fixed.
If you serve the string too close to the peep it coud warp the G5peep into an oval shape. The knots should be at least one inch away from the peep and you'll be just fine.
I love mine by the way. Great peep. I use the 1/4" size.
G5 ppep colapse problems
