hey guys, i have an 88 k5 np208 with 8" BDS lift. i got the rear driveshaft lengthened, and plan to get a high angle shaft in the future. thats the background. alright when driving, i think its the transfer case that makes a sound thats sounds like grinding, maybe like to things of metal rubbing. i can only hear it when my foot isnt on the gas. when my foot is on teh gas, the sound goes away. a buddy down the street has a 90k5 with 6" bds and np241 and experiences the same thing. any ideas what this is? it doesnt sound good, it gives me the same reaction as nails on a chalkboard.