Hey Vince,
The Coyote is just recently finished and haven't had a chance to fly it yet. I originally planned to use a Brodak 40 but, since they are on backorder so I fitted it with a Fox 35 (same bolt pattern). When checking the c/g I realized that the Fox was too light to balance w/o adding weight. Rather than add lead I refitted it for an OS Max 46LA w/stock muffler. The slight tail heaviness was probably caused because I added two carbon fiber straps from the back edge of the wing to the tail section.
I have installed a Sullivan 4 oz slant tank set up with uniflo vents. I have had good luck mounting the plastic tanks with Plumber Goop and adjusting the height by rotating the plug/vents.The wing and tail section are covered in 20 year old orange monokote. The fuse is finished on automotive urethane. I haven't weighed it, but I suspect it is a little heavy since I used a foam wing.
Good luck on your Coyote. Lets see some pics
Kelly