steering wheel wobble

[kernow_joe]

Guessing the parts were cheap if one of the ball joints has a split rubber already..?

got to totally disagree here, is easy to split a boot by not fitting correctly/not really thinking what you're doing, my meyle hd boot split after having driven the car twice all of about 6 miles. but I think this was down to jacking from ball joint without a split pin .....
if the ball joint is still good pack some more grease and fit a new boot can get them for a few quid, would imagine it would dry out/get f*cked pretty quick if its been driven around split though.

you should be able to feel where the movement is coming from ie at the hub(wheel bearing) or from the arm, more likely P bush, but these wouldn't cause vibration more random direction change mid corner

for new boot try here http://www.balljointboots.co.uk/ cheaper than getting a new one and not as wasteful