I've got the brakes working relatively well and with rubber lines. The rears can lock up as can the front left. I'm going to bleed out the front right one more time and then take it from there.
My U-Joints do not have any play in the joints specifically; but then the part that slides onto the transmission output shafts 'splines' both have significant play. I guess I'll remove the rear tires, jack up the kart, and run with the rear-end lifted to see any kind of wobbling.
The big thing right now is this kart's engine. I removed the head again to check whats up with compression, as after ~15 minutes of runtime the compression dropped to 100psi (Down from 110 when bought). Again, I found an 81mm Wisco in there which looks great so I scratched my head a bit. Then I noticed the top ring had significant end-gap, so I said OH NO that cant be right. I pulled the cyl off. Picton looks good but worn. Cyl looks good needs hone. Look at these ring gaps (Pics coming)
The better one (Bottom ring) had 0.084" of gap! New should be ~0.009 and service limit is 0.020. I didn't even measure the top ring but it was way worse actually. Needless to say that's the cause of my low compression. I actually don't know if the rings were really just worn, or perhaps someone did not bore to match the piston correctly, or a combination of both?
I've ordered a Wiesco 82mm kit off eGay which seemed to be a good deal especially with the exhaust bridge prepped:
http://www.ebay.com/itm/181425438789?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649