Replacing secondary timing chain tensioners with 4th gen and chain that includes master link to swap new chain. Intended to not remove 2ndary cam (disturb it) and swap tensioners. 2000 model year. Old tensioners so far in good shape but suspect. Cannot remove the old red colored tensioner, too large to lift out of the space between the cams. The new tensioners may fit between the cams without removing the cam. Do not have the cam locking tool. If destroying the existing tensioners to get them out, seems like contamination in the engine would be a big concern since the splinter all over. Can the 2ndary cam be removed by marking the existing position with a greese pencil in multiple places, then carefully placing the bearings in the proper order, orientation; then carefully following the torque sequence? Is it possible to do it without the cam locking tool? Already removed the old chain, cannot zip tie it, wanted to swap chains anyway. Any ideas on the best procedure from this point?