Hello,

I've made a mistake by waisting time on the ABS cowl that came with the GP Super Skybolt kit. With an OS91FS, the cowl only lasted 8 flights. The vibration cracked the cowl in several places, especially at the mounting holes. I planned to CA some light fiberglass at the mounting holes to reinforce but there is no room. I've made the fuselage fit snuggly to the cowl. Believe it or not the ABS cowl came out heavier than the Aeroglass cowl. Because the top half of the ABS cowl is slight smaller than the bottom half, I ended up patching the top half with automotive bondo to make it even with the bottom half. Also, the Monokote matching paint by Top Flite made the ABS even more brittle. The nice thing about the ABS cowl is that the built-in thrust angle is perfect. The built-in thrust angle on the Aeroglass cowl is not all that perfect - leave an uneven gap between the cowl and the back plate of the spinner. This is small imperfection that I can live with. But overall I must say Aeroglass builds the best fiberglass cowl I have ever seen. For the price and durability on Aeroglass cowl, I will never touch the ABS cowl again! I also have ordered Aeroglass cowl for my Top Flite P-40E and P-47D yet to be built.