Guys---there is absolutely NO REASON to run the cylinder to TDC before removing/replacing the rocker arms.
The FSM DOES caution to loosen the rocker retaining bolts one turn at a time, alternating back and forth between the pair, so as to prevent distorting the saddle bracket on top of the pair of rockers. Likewise, tightening them is done the same way--1 turn per time, alternating. Final bolt torque is 21 ft-lbs.
1992 XJ 2" lift -- RIP
2000 XJ 3" lift -- Australian Ford Big Brakes up front, rock rails, ZJ rear discs (with WORKING parking brake), C4x4 rear bumper/tire carrier, Hella H4 headlights, IPF driving lights, OEM skid plates, OME springs/shocks, JKS LCA's, JKS Sway Bar links.