I have a VIA 1535TM and need a GENUINE TomTom replacement EasyPort mount. I bought one of those cheap Chinese copies off eBay awhile back and it was not a good fit, the ball is too small so it flops around, and the suction cup is very weak. Looking for the genuine article at a decent price. Any ideas? This unit, while completely functional, is old so I don't want to spend too much on a replacement part if it can be avoided. Thanks!