Originally Posted by
lineinthewater
OK, I took two links off (1 inch). I didn't want to risk taking any more off. The BIG-BIG combo looks exactly like the pic on parks website that I listed earlier. The B-tension is still maxed out. Every gear *appears* to work (albeit the pulley is quite close), except for the lowest possible gear combo (little chainring, big cog). It is clicking and bumping on the rear derailleur. The cassette cog is clearly passing within the frame of the pulleys. I get the feeling that, yeah, my chain might have been a tad bit longer than average, but something else is going on.
Your problem is you are stil two links too long. You said you're too long by 4 links but you only took off two. The chain isnt tensed enough to pull the cage away from the cog. Probably does the same on the opposite (small cog big ring) too.
I had problems on my road bike by being 1 link to short, if only 1 link can cause issues, then 2 links long or short will DEFINITELY cause issues.