another 2nd gear question

[scottbly]

I recently purchase a 2nd parts bike for it's fairings and radio. I just got my 83 venture dressed up and have been driving 40 miles to work and back daily with no issues and just rolled over 40,000. Now I realize that both of my parts bikes have the punch mark and my primary bike does not. What do I look for as impending signs of 2nd gear failure? How hard is it to swap the transmission from a donor bike with 50,000 and the punch mark? Thanks

[SilvrT]

What do I look for as impending signs of 2nd gear failure?

 

When you've shifted into 2nd and roll on the throttle hard... and she jumps out of gear.