I got 3 A2's mounted on 3 S900's. No problems.
Only a few people had some issues with the A2's (maybe half a dozen people over the hundreds of units sold, if not more). Most received a replacement GPS or IMU unit and the problem was fixed.
I've been toying with the idea of having a go at a s900 build.... my question is am I right in thinking to go WKM instead of A2? (A2 still have too many problems?)
Id be grateful for your thoughts please
I've been using the A2 on my S1000.. no issues.. rock solid