MakerBot Industries

I use 100C for my bots and ABS. In the past, I went as low as 85C for PLA. Also, I only run 207C on my extruders.
I arrived at those temps using the calibration cubes. The Bridge test shows when you have the extruder temp right, and the 50mm tall tower shows how the HBP affects it.

Another possibility is that your Z-max height is closer to the platform than it used to be. Try raising the start position in your start.gcode by 0.05mm increments to find the sweet spot.

Another suggestion: as pieces stick quite well there is no need to run the outside of the print much slower than the rest. Slowing down the outer layer makes that bit wider.

Iv been using 90-97 for my temps. Works great some bigger parts are still a pain to get off it sticks so well.

I should add not every HBP is the same. You will have to play with the settings a bit till you find a good area of operation. You basically want enough heat to hold the part down and prevent it from curling. But at the same time you don't want too much that it starts warping or sagging the part.