Blowsion throttle - screw fell out

Location
Argo, Al
Was riding yesterday and thought I broke my cable. Looked down and noticed the screw holding the lever together was gone. Little bit of safety wire had me riding the rest of the day. Anyways, it seems to be an M4 - .7 bolt that used to be there. What I’m wondering is if there was a bushing or anything inside the throttle lever? That hole is much larger than an M4 bolt and I feel like there will be slop when I put it back together. Does anyone know or is anyone with a blowsion throttle willing to take one apart to look what else I’m missing?
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Location
Argo, Al
Thanks! I still have the little plastic bushings. I'm going to get a screw then try to make a bushing. I have a stock water fitting off of something that's smooth instead of barbed and I think I can cut it up to work. It measures pretty close.
 
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