Hey Thomas, I have never had a scratch nor even a pop open with my Holga. The vignetting is too pronounced with "close-ups". I have had a roll of film get so jammed in that I thought I'd loose it before I got it out . These cheap plastic toy things are amazing considering what we demand they do. For $25.00 just toss yours and get another. Of course you'll only be trading for another set of imperfections , LOL ...
The lens of this camera got knocked off once and sort of just snapped back on... you will not get any 8x10 coverage from this lens, it barely covers the 2x2 square .... hence the moderate vignetting and stigmatism .... interesting thought though .....