I replaced a long in the tooth Porter Cable trim router with a Bosch Colt, worked great from the beginning, started to noticed lots of arcing under the lid, then loss of and erratic speed control. Finally it wouldn't even start. Replaced brushes, cleaned commutator, bearings seem tight, very few hours of use. Replaced it with a Dewalt 1 1/4 hp palm router which seems to be fine. Is it worth trying to repair the Bosch Colt? I use the Palm routers for mainly circular cut outs but I am so disappointed with the Bosch.