RE: World Models covering material
Kojak41
I bought my third WM T-34 in mid July, 2005. The covering did exactly what you describe. Small puncture holes plus the covering started coming loose. I recovered the wings and tail last month because of all this. My first T-34 (bought in late 90s) lasted about 5 years, 800+ flights and the covering was still in decent shape when a servo failed. Since I am flying at the same location, same fuel, etc. WM must have gone to a different covering, at least on this plane.
On the other hand, my current WM P-51 46 size covering is doing OK except some of the seams came loose. I went back over them with some thinned epoxy.
Brian