This incident reminds me of the importance of "procedure". This past summer I attended the EAA Airventure at Oshkosh, WI for a day and happened to stop in to an FAA seminar that was talking about how "broken procedures" could cause accidents. Of course they were talking about full scale aircraft, but they indicated that the most mundane thing (a crying infant, worried passenger, etc) could alter the way things that the pilot did "automatically" and cause bad things to happen. The same is true with our models and gets even more true with the larger ones. One of our members broke his procedure last month and forgot to put the bolts in which hold the right wing on (with sad results). I have repeatedly forgotten to plug one aileron in during assembly and talking with a friend, fortunately noticing it when cycling the control surfaces before startup and WATCHING to be certain everything was working correctly. The bottom line is that we each need to develop a procedure for assembly, startup, and flight that we religiously stick to, and if we do something that changes our normal procedure, extra caution is warranted. I hope your finger heals well and rapidly!