I've had pretty much every single problem you mentioned about the primo mix. The trick is to tighten the non-drive side first, then take an adjustable wrench and adjust the drive side locknut to your liking. After that, just tighten down the drive side and voila. It's a bit tricky to get it perfect but once you get it down, its simple. I've tried out so many hubs already and the primo mix is by far the best feeling. I'd recommend to just replace a few parts (should cost about 40 to replace all the hardware and axle) and stick with the mix. As long as you don't mess around with it, it's the best hub out there in my opinion.
I made a thread not too long ago where I was having problems lacing up a fresh Ribcage to this same hub, and I was getting some bad tight/loose spots because the hub flanges are bent. There are actually stress fractures on the inside of the flanges. On top of that, it's been slipping A LOT lately.
I probably could just swap the axle and cones, get a new driver, and keep running this hub, but i'm over it already. I've been wanting a new hub ever since this one started giving me problems 3 or so years ago, so I think now's the time to do it.
(I actually just got back from the shop with the hub
!!!)
I'd check out your dropouts. If you're having all these problems with your hub, Chances are good that your drops are messed, in which case it's not going to matter what hub you go with.
And if your chain is that stretched its going to wear out your new driver real quick.
It's definitely not the dropouts. This hub has been giving me all of the problems I mentioned for the past 3-4 frames (can't remember if I had issues on the first one I ran this wheel in), one of which was a Sunday, so i'm almost positive it isn't the drops.
You're probably right about the chain, but I think i'll take my chances... I think the 4130 driver will be able to hold its own against whatever grade steel the chain is for however long till I change it.
This sprocket's got a pretty bad hop in it too, which is probably what caused the chain to stretch so fast. I've got a brand spanking new Tree sprocket at the house though, so now that i've got a fresh driver, i'll probably throw that Tree in there with a new chain relatively shortly. I'd been avoiding the new sprocket since the driver's pretty badly worn too, and I wanted to just redo the whole drivetrain at once.