broken gear reduction starter on 330GTC

I ordered a gear reduction starter from ferraristarters.com for a 330 GTC we are working on and received it promptly in 2 - 3 days. After installing it, we were pleased with the way the engine spun over and immediately started right up. Unfortunately the next day after pulling the car around the building to wash it we went to start it after the wash job and were dismayed to only hear a whir from the starter but no movement from the engine. Upon disassembly we found part of the snout of the starter casing that locates the bendix was snapped off. This occurred after only perhaps 10 - 15 start events total and none of them to my knowledge were unusual or hard on the starter. Has anyone else here with the after-market gear reduction starter had this problem?

I am attaching some photos we snapped of the broken starter taken just after removing the part from the car.

BTW, this is the third one of these same gear reduction starters we have here since the original starters on the two 330 GT 2+2 cars were also not up to the job of spinning the V12 engine over. These other two seem to be operating fine so far.

After discovering this I was able to reach David from ferraristarters.com and he immediately sent out a replacement starter (which has not yet arrived) as well as a return shipping label for the defective part.
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I have one on my 365gtc4 .It has been trouble free for years. Mike