The biggest short coming of an RB202/250 type arm is the plastic counter weight extension. Whilst some companies have produced exotic solutions to this problem, an economical and equally effective upgrade can be had by simply fitting the counter weight and conter weight extension from an Rega P7 type arm.
One word of warning you will need a stylus balance of some sort to set the tracking weight. The kit comes with full installation instructions, installation is simply two minute job requiring no tools or expertise.
As sold by our competitors for £70!