After multiple attempts to get the Jonsered and Husky dealer (he also sells Shindaiwa I noticed) to get back with me regarding the incorrect chain brake handle, I bagged up all the parts and receipt, hopped on the old Honda 750 and rode over there. When he saw me and we greeted each other he finally took the time to look up the correct part in his book. Oh, um seems he doesn't have a book for the 2172. Had one for the 2171 but wasn't sure what if anything changed... Tried calling his parts distributor but the guy was out until next week some time. Grrrr! Now I think I know why the Jonsered I own is the first one I ever saw. At any rate, I returned the brake handle that didn't fit so at least I got out from under that. The attaching hardware was correct so I have that. Just need the plastic handle. A google search basically turns up nothing. I will work at it until I find a chain brake handle, run the saw some but I have a strong feeling that it may turn up in the classifieds here eventually. A saw I can't readily get parts for is not too useful to me. I am not a collector, they're just tools to me. Oh, and the 2172 he had in stock had been sold. So I know there's another one out there somewhere... He had a Husky 372xp and a 390xp along with some smaller stuff. A pretty spiffy looking Shindaiwa top handle climbing saw too. Anyway, Jonsered saws are not my friend right now. It is especially frustrating as I have a job of removing a medium large downed pine and was planning on using it to test the 2172 out.