Originally Posted by JamesDean

Ah I knew someone would say bleed them first.

They've been bled numerous times. I went through several tins of ATE TYP 200 fluid bleeding them. I swapped master cylinders from another 500E unit I had sitting on my shelf (for about a year) then had them professionally bled..was nice for a few months..but now its as I described above.

I think I've decide on getting a new ATE master, its like $155, a reman one is like $100+core, $55 isnt much for a new unit.