The OEM idle adjustment screw (slide height) is knurled, But it is still a little difficult to reach, pinch and twist. Good news is that there are inexpensive replacements with big "knobs"! I found one on AliExpress for $2.82 plus a few bucks shipping. It is a perfect fit. To find it, Google:
ZS Racing Motorcycle Carburetor Idle Speed Adjustment Screw For Universal PWK Carburetor
WARNING: This knob will hit the frame on the base Templar. So this upgrade is good for Templar X and Templar M models.
It takes about 3 weeks by US mail, but worth it. Just order it and forget about it. It will show up eventually! There are others out there. Just keep with the dimensions.
I measured the OEM slide screw first. Diameter/length of the nub was good, and it fit in my thread gauge
(M5-0.80) so I tried it:
The add on AliExpress shows dimensions, and they match:
Here it is installed
Only one thing to keep in mind... The spring that comes with it it strong and kind of too long, so I reused the OEM spring from the original. ALSO, the thing comes with a nice washer, which I used on the carb side of the spring.