Agree...

My main suspect is the clutch bell. Since second #1 I've seen those little bearings don't like them. On some gearings the clutch bell touches with the 2nd gear clutch bell.

Don't know if this can make a difference for you guys, but a dreaded morning blew 4 2nd gear spurs in 4 consecutive quals with my MRX3 until I realized the big gap I had on the clutch of the 2nd gear, cleaned the bell, sanded with #600 grit sandpaper a little just to remove the shiny finish and give a firmer gripping surface, rubbed it with alcohol and installed another time, this time letting much lesser gap (about 0.2mm of gap), the shifts are quick, firm (sometimes brutal) and didn't get another time a blown 2nd gear spur.

To those all who are blowing 2nd gear spurs: double, triple, quad check the bearing that supports the housing into the shaft, the bearing should be on perfect condition if not, change it for a new bearing, a little slop on the bearing causes the dreaded spur carnage. Check too for the gap and reduce it to the bare minimum, just for having an extra of security.