hobbit 4 stroking at WOT after minor upgrades

Added a MLM VM18 intake coupled to a 14mm dellorto PHVA with Boyesen Dual Stage Stock reeds to the bike and she four strokes hard at wide open. I don't have access to dellorto jet's so I'm using some mikuni's that fit, also I'm not running a filter atm as it won't clear the pedals. . Tried from 77.5 to 100 and have yet to find the right spot. 90-95 seem close according to the plug.

The moped takes off fine and then at like 7/8th throttle it just four strokes. I've checked for air leaks and come up with nothing. Any thoughts on what could be causing this other than the bad moped juju that emanates from me?

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