coaster brake probs....please help

So after having my bike down for over a wek waiting on bearings i got it backs together. i bought a proper cone wrench so i could tighten the lock nut (thats why the last bearings failed) anyway i have it all together and the brakes worked proper when upside down and pedaling by havd to test. when i cranked her up and tried to apply the brakes the pedal moved back then grapped and jerked forward. the coaster part functions fine but instead of braking it act like the clutch is grabbing when pedals are pushed back. I thing i have the brake shoes on proper but im not sure. its a real PITA to take off the tank flip it over and mess with disassembling the rear hub any ideas so i can do it once and be done? thanks guys

I found the answer to properly positioning the brake shoes here YouTube - wheel teardown1 i wasnt placing the shoes on proper gonna have a new go on it in the morning.

the guy in the forementioned vid was wrong. the pads wuld not even go in doin it the way he described. i put it together with tons of grease and they half assed work before garbbin and kicking the pedals forward. also cant get the bearing cone to stay tight. i am using a cone wrench and holding the cone whilst tightening the locknut and it still loosens up. I m waiting on one of jims sprocket adapters and imma just find a shimano wheel assem. Also waiting on a tube for my neighbors bike. his has given no probs cept for blowing old dry rot tubes