I thought I would post some info of things I purchased from prothe, before I really had an idea of what kind of business he is running.
Here's a list of stuff I've purchased and used and my opinion on these idividual products.
-Glowplug set for TDI. Do not buy these! They are not worth the cheap price he is asking for the set of four. The taper just above the thread used for sealing is not machined well enough to seal. Out of the four in the set, one might have been considered sufficient. Plus, they don't last very long. Every single one has burnt out in less than a year, and there's nothing wrong with my glow plug systems since they were tested on two separate vehicles. I just consider myself lucky that one did not break apart in the cylinder! I give these a 0 out of ten.
-Set of standard pistons for a TDI. I've been fairly happy with these pistons. My issue with these is the oil ring is not completely supported on each side of the piston right next to the wrist pin. There are notch's cast into the piston that goes right into the oil ring groove. Doesn't seem right. I am burning a little oil but I really can't blame the pistons or rings since I put these into used aaz block with a quick hone. For the cost I rate these a solid 7 out of ten.
-Door handle for mk3. You get what you pay for. Cheap price,cheap product. Definitely won't last long in a cold climate. 2 out of ten.
-Injection pump parts, 11mm head, aaz camplate, tdi camplate, seal kits. I've had good luck so far with the tdi camplate and 11mm head. I have about 5000 km on these parts now with many cold starts and so far so good. I really don't understand why he has such a bad rap with his pumps because his pump parts seem to be fair quality. I wasn't too impressed with the seals though. The top pump cover seal did not fit at all but the rest of the seals weren't bad. I won't rate the pump parts until I pull the pump apart and inspect everthing.
TDI injctor nozzles .205. They work but that's about it. I'm planning on picking up some bosio nozzles so I will be able to compare then.