Eh? Surely it just involves a pair of long nosed pliers in the old plastic bit to pull it out, and then just push a new one in? At worst you might need to remove the heater slider trim (which tends to fall out anyway)
Soz, thought you mean't the slider mech's broken True, if it's only the slider itself it's a breeze to do Al Edited by: alanbe2
You can get metal ones theres a guy on ebay who posts em up now n again, I'm getting a set for 25. Bit pricy but I love metal slidy/switchy bits Edited by: rubjonny