Then you should be in for a little treat when its fixed. Yours is a S8 (I believe) so the difference should be noticeable.
Of course S8 has a lot of power anyway, but every extra helps
Damn I didn't realise the ball at the bellows end can break, I though that part was steel?
Is there no room to drill a hole and attach a new 8mm ball?
Like this but cheaper.
http://www.ebay.co.uk/itm/Maverick-B...AAAOSwDNdViv0P
unless the whole metal section broke off from the bellow?