How did you join the cowling mine is in the same spot as yours is almost ready to cover. I lost some of the intrest to finish it but may for a winter project. I was going to use a os70 but will opt for a saito 91 now. Should be quick. We'll see. I bought a Katana 50 for the saito 91. Till i fiish the Ultimate but the covering schem will be just like the DP Ultimate. Yellow!!! May do the bottom of the wing/tail feathers see threw blue like the Katana 90.