Ok, here is my two-bit 914 home operation....
Repair and recalibration of MPS's. I repair MPS's and recalibrate them to 037 and 043 spec when I have stock or I can rebuild your 2.0L MPS with a good donor diaphram from YOUR 1.7 MPS.
Cost is $50 to calibrate your good MPS, $100 if you supply the good parts
Cost is $200 for a rebuilt 037 or 043 MPS (out of stock right now)
shipping is extra
Located in Seattle, WA
Email me for details