Actually I think you need to use HServoStat for all of them, unless you never use any HSERVO on the Arc32.
Than maybe you can do adin on pins P39, 56, 57, 58, these 4 pins are directly hooked up to Analog input pins. For pins 8-15, 24-31 they are connected part time to pin AtoD pins through the Mux chips so for sure you need HServoStat for them. And if you do any Hservo type stuff on your arc32, probably trying to do any ADIN on the first 4 pins will probably interfere with the HservoStat code...
Kurt
P.S. - I had to figure ot some of this with my C library code, which I still need to implement this part of it (
http://www.lynxmotion.net/viewtopic.php ... 559#p65925)