[Gompers]

It's one less thing that can go wrong with the engine, IMO.

Those mechanical pumps can fail and leak gas into the crankcase. You won't know it's doing it until it shows up in the oil. Depending on how diligent you are in checking the oil, it's not a huge deal if it does and you catch it, but as sensitive as these engines are to oil issues, it's not something I like worrying about.

They can also fail and leak gas down the side of the engine gathering up gunk and ending up down by the starter.

I mount the electric pump up on the firewall. It's dead easy to wire on a KT. If it leaks, it's super easy to replace, and it'll just drip a bit of gas down onto the blower housing or firewall. Not a huge deal and super easy to spot. I can swap one out in maybe 5 minutes.

A new pump on a good engine? It's fine and I would be fine with it too. But if I'm going to have to replace the mechanical one with a new pump, I'll almost always go electric and cap off the old one just because, IMO, it's easier.