Hi!
I have 3 moki's on VP30 perry pumps, 2 x 1.80 and 1 x 2.10

You need to set them up in a specific way, which works every time for me.

First off, you must have a filter before the pump otherwise the pump will fail after a while.

When you set the pump up, start the engine with the HSN set rich, say 2 turns out.....then adjust the pump until the motor runs rich, this ensures the pump is delivering enough fuel.

with that done, you need to adjust the LSN until you get good transition, do this in very very small amounts as the LSN on mokis is very sensitive, you will need to move it towards the lean side (-).

Then with that done, adjust the HSN again, then go fly!!

Hope that makes sense.

For the record i use OS 'F' plugs, APC 18 x 8 on my 1.80 and APC 20 x 8 on my 2.10


Hope that makes sense?

Regards

W

PS: I forgot, these MOKI's need a lot of running in until you get full performance, at least 3 gallons