Install several of the regulator bolts (remember the top two are the long ones)

Don't tighten them yet

Grease up the window bottom track and bushings before assembling

The bushing clip is pretty hard to get on - enjoy that

After you're happy with the placement tighten the bolts

Then remember to put the vertical window track bolts back in too - they have the funny dimpled flat washers (be sure the window glass is in the track)