Iso /6 hardened oil pump drive gear

The thing is that I already spent 300 bucks on that cam and the entire engine is together. Also I have researched this subject and it seems to happen on other cams too not just comp cams so I'm thinking it's either a quality issue with the pump gear orrrrr it's the fact that all replacement pumps are already about 40% larger than the factory one which is kinda making the oem replacements a high volume which may be causing excess stress on the gear. I Dont really know anything for sure tho.

I just Dont want to have a bunch of issues with this engine