Originally Posted by Turbotandem

Lightning stated Q-factor is 150mm, I get 156mm, must be a special way of measuring it... They make both a standard triple 5-bolt spider and a 54/104 triple spider that is reversible to adjust the chain line a few mm. I am using the 65/104 4-bolt, and I did need that 2-3mm adjustment to get this set up to work. I have the 5-bolt triple by lightning for another of our road tandems with lightning crank (also with 135mm rear hub) and have not had issues.

I am on either a 611 or 612 SQ Labs seat depending on the bike. My stoker just discovered the 610 which is light but more compliant than 611 or 612. I did Dirty Kanza 200, Hoodoo 500 and RAAM (2015 4-tandem team set a new course record!) on the SQ Labs and love them. The 610 is new to my stoker. She had to change saddles on hoodooo to remove the 611 for the later half, she is very sensitive to seats. I hope the 610 is a winner.