VR trigger wont go over 10k on 60-2 (classic)

I have a 1000cc race bike engine in the shop,

capable of 15000rpm but it wont go past 10k

and gives error UNEXPECTED MISSING TOOTH

Any ideas how can i fix this? Please its a little bit urgent!

Try resistor inline 150k for example.

Yes today we tried various resistors inline and also with a pulldown at the same time this was cleanest in general, it even needed to stay below the sensitivity switch threshold everything we tried only got us another couple thousand rpm but still stopped dead at 12000rpm no matter what we did