I've had prob with mine as well and still running stock. I read you was running 3.5 Rubi lift, if you dont mind me asking how well do you like it and how does it perform compared to the Tj RE lifts, also are oyu running stock gears and comments on that, one more question what about your drive shafts front and rear. Sorry to change subject and would appreciate any info,thanks.
I'm pretty happy with the lift. Now that the little problems have been taken care of it seems to perform pretty well. As far as installation difficulties, there are a couple of things to watch out for:
I had a clearance problem with the rear track bar and the relocation bracket hitting on the bolt on bump stop "pad" on the passenger side. The pad had to be modified. Also, the front track bar seems to be fairly light duty and I replaced mine with a Full Traction bar. The lift uses the stock rear track bar (not adjustable) and my rear axle seems to be offset about a quarter to half an inch.
I replaced both my diff covers with Riddler cast iron models. The front cover hit both of the front track bars I tried so I had to go back to stock.
I did replace my gears with 4.88's (Superior). I like the overall ratio as it's fairly close to the stock ratio with the 35's (it's actually just a little bit lower). I think 5.13's would be fine, too - I was just trying to keep the street performance relatively close to stock. The rear gears were very noisy after installation but have quieted down a bit now - they're louder than stock but acceptable.
I'm running the JE Reel 1350 style driveshafts front and rear. They seem fine. I do have a vibration that I feel mostly through the steering wheel at an indicated speed between 40 mph and 50 mph. I don't know if this is a driveline vibration or not, but I suspect it is.
Overall, the components of the lift seem to be high quality and it does perform pretty well. It seems to articulate nicely. It's fully adjustable (except for the rear track bar) and is quiet - no clicks or thunks. The Jeep is very darty in a crosswind but I suspect this is an alignment or castor issue that I'm still working on.
Hope this helps. If you have other questions, just ask.