things i should look for?

[twitch101]

recently tore down my 350x engine to redo the top and noticed some slack in the wrist pin. i figured since im going to have to split the cases anyways i assume i should replace a few other things down there. ive never split cases before so is there anything i should just replace while im in there? also how do i make sure it is timed right once i put it all back together?

[200xranger]

i always do crank bearings and timing chain at the least. i know on the 200cc engines there are timing marks on the valve cover, cam gear, then the one in the lower end in the peep hole.

[twitch101]

what about cam chain tensioner and guide. is that something worth replacing?