The first was solved by getting a Polyetherimide sheet for the heated bed... Something like this below.
This product needs a sheet of double sided transfer tape, something like below...
The next two problems I managed to solve with one fix. It seems that the print bed was using enough power that it was robbing the extruder heater. Insulating the underside of the print bed works wonders for solving both these problems without the cost of a larger power supply.
Step 1: Materials and Tools Needed
1) 12 x 8 or 8 x 8 Polyetherimide sheet
2) 12 x 12 3m double sided adhesive sheet
3) Heavy duty or commercial paper towels, or any material that can act as an insulator and handle the heat.
4) 3M painters tape thick stuff, chances are, you already have some of this from printing.
5) 4 x Small Binder Clips
6) Exacto knife or similar
Step 2: Remove the Print Bed
Step 3: Cutting the PEI and 3M Adhesive Sheet
Peel off one side of the protective sheet covering the 3M sheet exposing one side of the adhesive. Lay the sheet on a flat surface, adhesive side up. Take the PEI sheet and carefully bend it placing one edge down on the adhesive, slowly and carefully rolling the bend into the adhesive. The goal is no air bubbles between the adhesive and the PEI sheet. If you do get some, use a credit card to smooth them out and pop them with razor knife. Use the razor knife to cut away the excess adhesive sheet from the PEI.
Step 4: Applying the PEI Sheet to the Print Bed
Step 5: Insulation
Step 6: Re-assembly
Step 7: Final Thoughts
Using the PEI solved my problems with PLA and ABS prints warping off the bed, even long thin prints adhere great, I still print a small skirt even though I'm pretty sure I don't need it. As you can see from the terminator I'm printing from ABS there is zero warping in the corners.
I didn't tape the insulation under my print bed but next time I need to take it apart I plan to. Insulating the bed increased my preheat times and eliminated the problem I was having with the print head not maintaining its temperature during prints. Using the insulation pad on top of the print bed also helps a lot with slow preheating.
I got a few bubbles under my PEI but nothing too major. So far it is by far the best print surface I have used since I started. Cleaning is very easy, just pour a bit of rubbing alcohol on the bed and wipe it down with a cloth or paper towel...leftover print plastic is easily removed with a small window razor scraper. I often use the same scraper to pop the corners of my prints then use a small screwdriver to lever the prints free from the bed.
I wish I could have taken more pictures of the process but I did it about three months prior.