1st guess - You may have to adjust that thrust bearing on the bottom. I assume you mean you installed the thrust bearing kit, with pulley, cam, 2 washers, bearing etc...?

If you pop the dustcap off you can rotate the pulley by hand and there are marks that tell you if the cam is within adjustment. Turning it one direction should lift the brake off the stator and spin the gearcase too, the other way nothing changes.

In most cases you need only the thin washer but you can use either or both as needed. It's a pain in the neck to get those washers on the e clip on and off. If it went together easily you are either gifted or lucky or both. Usually it requires a few choice words.

So verify that the pointer on the white cam is not rotating past the line on the pulley and that it causes gearcase to turn.

If that is all ok, there are other issues possible: spin speed buttons, timer, etc. But I'd start with the cam since it was recently handled and it can be seen just by leaning it back.

Good job. Many times even getting the thin one in is a challenge, depends on how fresh the brakes are too.