Yeah, reverse your counterweight, just don't expect your records to last very long and you'll have to buy new stylii (sp?) every couple of months as the tips will fall off!!
I have my Shure 44-7s set up as the instructions tell you to and i find it really difficult to make it jump, I set my tone arm height to about 4 (i had to guess cos i use vestax turntables and they have no markings), the cart is fixed in the middle off the headshell dead straight (none of this toeing-in malarky) and after balancing the tonearm, i set the weight to approximatly 3.5 grammes (4 if i'm using a brand new stylus, to wear it in).
Some records i own are rather f*cked (charity shop bargins!!) and jump regardless so a little extra weight is needed, in that situation i just slide a penny onto the headshell and that does the trick!
Also it helps to be light fingered, be gentle with your records, this may sound patronising, but most people are far too brutal when scratching