You should get that FS racing full metal jacket clutch from DDM. It's not that expensive, the spring is already installed, there is basically zero clutch dust, the spring should be thick enough where it shouldn't break, and it grabs awesome. It's working very well so far on my sport, which you can see on my channel. My favorite part is not clutch dust that stuff is absolutely disgusting. Also the piston stop tool has always worked great for me on rc engines, and the gp460, where the spark plug is directly in the middle of the cylinder, and not at an angle. Definitely however would not recommend using a piston stop on any engine with an angled spark plug. Before I had that tool I did do the rope trick with paracord. As long as you can see the exhaust port is closed, the rope trick always works well, you have nothing to be afraid of. Just make sure the exhaust port is closed that's all. Way better than sticking a screwdriver in the fins of the flywheel and breaking them off like I did one time, learned the hard way!

I use a rope and the rope isn't going to brake unless you are using a string , ggg A rope isn't going to brake pulling it out , like a 1/4 inch rope. Just stuff it in while the piston is down then turn the engine by hand until it stops.

I hold the pull starter n crack those bolts loose

Yes that spri g goes in from back with tmr spring but not very great spring don't last long snapped many try ufc9500 or blackbone 10000 next if have issues also upgrade to a fs or ufc metal clutch better snap of line and last much longer!