MTNRUNR, I'm not sure precisely which NW Maine peaks you're refering to. Here a a few that aren't described in the Maine Mountain Guide:
-Cupsuptic Snow: the logging road heading north from the Tim Pond Rd along the west side of Little Kennebago Lake to Wiggle Brook Road was very icy on 2/12, but drivable with caution in a 4 WD
-Whitecap/No. Kennebago Divide: continue past the Wiggle Brook Rd on the approach described above. The road along Bear Brook leads to the col between the 2 peaks. A snowmachine trail from the col climbs to the summit ridge of Whitecap.
-Boundary: my preference is to do it from the Louise-Gosford DEC in Woburn, Quebec. But some continue over Whitecap to the boundary swath. Others bushwhack in from the Canada Rd (which did look plowed this winter from the southern end; we didn't explore it, and it's usually gated about 4 miles in from the junction. Anyone have more up to date info?)
-E. Kennebago( an update): Again, very icy 0n 2/19. We actually cramponed in from the main highway, but a party of 5 successfully drove in about 3 miles that same day.
Have fun this weekend!