A more radical solution would be to use a T&C Touch controller.
I definitely suggest to use a T&C controller. I used PW for quite a time with the Merlin and shot some gigapixels with it.
I had two issues:
1) using a 300mm lens the Merlin/PW was extremely slow.
2) it produced differences between the xml-positions and te mechanical positions. Sometimes it was almost impossible to get a good stitch without hours and hours of editing.
Switching to the T&C controller was the first big step regarding reliability/precision and speed. ItÂ´s very small, needs no adressing via BT or WLan but uses a cable from
5cm up to 15m, gets powered from the headÂ´s accus and itÂ´s power consumption is VERY low.
I made a short description of itÂ´s functionality - not yet finished but containing the main items:http://www.panoneed.com/S4.html
ThereÂ´s a Merlin-version and a Panoneed-version.
ItÂ´s not my intention to promote the TC and Panoneed. I just use both of them intensely for professional/commercial producing and never had any issue with one of them - and iÂ´m again and again impressed by the consequence and ingenuity both of them provide.