I can totally relate to builder burnout. I have built over 400 model airplanes and helicopters, one full scale Fly Baby experimental airplane and 4 ultralights. The last model airplane I built was about 6 years ago, until just recently when I got interested in building again. Now I'm in the middle of doing a Twin Engine Kadet Senior build thread here on RCU.

I built so much and so fast that it became work. I was even building for other people to help pay for my hobby. (Damn, sound like an addiction). I ended up getting out of R/C completely for a few years. I just had to get away from it. But the "call" came back after I happen to stop by the ole flyin' field one day. I got back In helicopters for 2 or 3 years and even bought a couple ARF planes, rather than build. Though I had no pride of craftsmanship in the ARF's, they flew well and kept me flying. I had no plans of building again until a couple of months ago I ran across a thread here on RCU in the beginners column that was talking about the Sig Kadet senior kit. It then evolved into talking about modifying the kits, which there are several at our field flying. Then a fellow pilot posted some pics of the Seniors that he had modified. One of these was a twin Senior Kadet. I was so enthralled by it, I ordered an kit and started building it. I guess it just took something new to spur my interest and this was it.

I still hate sanding, but I make the best of it and do a little at a time. I'm having fun building again!
Hang in there, it will come back. It may take awhile and may even require a break from the hobby all together. The urge to fly never goes away completely. Don't do what I did and sell everything and leave the hobby....I just had to buy all that stuff again...LOL

Rod