I have a problem with the turbo wastegate being stuck. I tried to move the lever which was stuck in the downward position. Having tried to free it with WD40 etc. , i applied quite a bit of force and the lever has snapped off . Could anyone tell me if this is repairable, or whether it will mean a replacement turbo? Is the wategate assembly part of the turbo housing. (i think the turbo is the standard Garrett T25 unit). it there an overhaul kit which may contain the parts?