Has anyone else ground a u shaped channel into their crossmember with their front shaft ? I looked everything over and my front shaft is still fine , just a little play at the slip . It never made a lot of noise until recently . I believe my front springs are finally broken in , and with the discos and the rear lift kit shocks up front I may be drooping too much . Should I put the unused 4 inch front shocks back up front or what ? What about grinding the crossmember for clearance ?