On the YZ85-VF V382A reeds you have to port out the stuffers to fit whatever manifolds your using.
In my bigger TM34's flatslide conversions I use the UPP manifolds. Bolt the manifolds onto the reeds and scribe a match line as shown here.
Now you have a port out to size to grind to. I always have a new carbide bit I save just to cut these hard plastic stuffers, never use on metal. Old bits just cut like crap once used on metal.
Once your cut out to size, feather your cut down the ears to have a nice airflow pattern through the stuffer.
When your ready to grind out the cylinders to fit I use some studs in the boltholes then slide on my TSR reed spacer and scribe a cut line to port out to.
Using the studs allows me to slide in the reed cages to keep checking where to remove material out of the intake track.
Chuck
In my bigger TM34's flatslide conversions I use the UPP manifolds. Bolt the manifolds onto the reeds and scribe a match line as shown here.
Now you have a port out to size to grind to. I always have a new carbide bit I save just to cut these hard plastic stuffers, never use on metal. Old bits just cut like crap once used on metal.
Once your cut out to size, feather your cut down the ears to have a nice airflow pattern through the stuffer.
When your ready to grind out the cylinders to fit I use some studs in the boltholes then slide on my TSR reed spacer and scribe a cut line to port out to.
Using the studs allows me to slide in the reed cages to keep checking where to remove material out of the intake track.
Chuck
I always see bikes I wish I had here all the time... 
