i too was getting the 'rubbing rear brake sound,' and the popping out of 2nd gear. i expected my dealer to go ahead and install the upgrade kit, as per the info posted earlier, my VIN# falls below the VIN# 337294 cut off.
shockingly, my dealer says NO. he is saying that the upgrade is only for engines prior to 244280. he fixed the rubbing issue by replacing a sealed ball bearing, and a torsional damper bearing. but, suggested best he could do is machine/grind the shift lever so the indent for 2nd gear "better engages." and added, only early 05 and some 06 models require that upgrade kit
anyone have 'official' info from triumph confirming the 337294 cut off? would my calling Triumph customer service help?