I am going to revive this old thread because I just picked up a Kavalier from a couple flying buddies. The plane was found by them in sad unfinished shape, so one repaired the wing and fuse, and built a new stab and fin, and covered it all fresh. As I installed the engine , I did not realize it’s supposed to be mounted at a 45 degree angle. I chose to go ultra simple and just mount it upright. But I notice that the firewall has very little right thrust and little to no downthrust to the naked eye. My question to those who have built and flown the Kav, is did the kit built plane fly well when the firewall was set per the plans (which I assume mine was)? TIA.