I have gone through this many times for all the same posted reasons. Had to leave my 23 year career as a Aircraft mechanic with back problems. So I stopped working on car tore it down just to painful to work on. I finally threw it back together after sitting for two years and took it out for a tnt and it ran its best ever. You will know when to stop and then get back in taking a little time off can be good. I am running out of physical time as it is still painful but I had fun and I hope to get back to a few races before I have to finally call it quits. If you need a little more time take it.