How much fluid is in the primary? Too much will make the plates drag and make it difficult finding neutral.

 

I recommend taking your bike to a different mechanic and getting a second opinion. You shouldn't have clutch issues with a new clutch.

 

HD clutches are typically a balancing act. You want enough clutch that it don't slip but not excessive pull and don't drag enough to not find neutral. You can adjust the pressure plate lift by changing ramps/ clutch arm even the ball diameter. You can adjust the pressure plate force by changing the spring. You can add plates, and clutch surface area.

The first thing I'd do is, as shown, set the fluid correctly. You can also drop the fluid level below the line shown. Check your drive belt and make sure it ain't too tight.

Adjust the clutch.. Every one has their own magic number of center turns but the manual says 1/2 to 1 and anything in between is fine. Check for flex in the system. A bad cable / poorly routed cable will decrease total lift. Make sure that the pressure plate is lifting off the clutch stack evenly.

If the bike is stock, stage1 or 2, I'd go back to a new stock spring. The lighter spring will likely give a little more lift. If you are running the Barnett heavy spring on a bigger motor, I'd drop the spring down to an SE which is 380lbs instead of Barnett witch is 480lbs unless you are making a bit over 120 fp torque.

If you have over 0,080 even lift at the pressure plate and clutch still drags, I pull the clutch and check for bent steels. With the +1 kits the damping Belville spring and spacer should be removed.

Also with the clunk drive 6 speed, you can get/ or shorten the front arm on the shift rod, or lengthen the tranny arm. The clunk drives shift better that way.

A trick to help find neutral is to do it when coming to a stop. Another, if stopped, is to hold the front brake, let the clutch out until the Rs drop then yank it back in and tap the shift lever. (Old brit bike trick)