They claim it was .405 lift but looking at the rcd cam next to the stock one it looked like the lobes were smaller
Not trying to be a dick, but do you know anything about cams? A regrind cam is alway gonna look smaller. You obviously can't add material with a cam grinder. By grinding the backside of the cam lobe you will end up with more lifter travel. It all has to do with the base circle and where the lifter sets on the back side compared to where it is at full lift. You can't look at it and tell. Did you get your other problems fixed with the truck? Or are you still just blaming the cam for no unjustified reason? If you only made 36 psi boost you obviously have a leak somewhere, just like we stated in your other thread.
If your going to keep saying that the cams the problem find some proof. I've put in a lot of cams and never had one cause problems. But you said you had a squeal and your low on boost. There gotta be something wrong with your truck. I know what the grind is that's in your truck. There is no possible way that it is hurting your truck. Otherwise stock cams would be hurting your truck because there isn't much change from stock. It's a stock stage one cam made to drop in.
Oh and to answer your dying issue. Most all engines will dye if you go from full load all that air and fuel to nothing like that. That's why most of all the big trucks rev them up at the end. If I let mine snuff out like that it almost hydra locks. I would either bump to neutral or let off and blip the throttle a couple times as it comes down. But the dying isn't anything abnormal at the end of the track.