I have converted a Panasonic GH2 with 720nm IR filter. The conversion was made by a guy cutting a square IR filer because I haven't found any lab here in Italy that would make the modification because of the dimension of the GH2 sensor, different from the others m43 cameras. The IR filter is 0.3mm thicker than the hot mittor filter it has replaced. I tested the converted camera with 14-140 mkII first and I haven't found any issue, even at 14mm. I tested then the Panasonic 7-14mm f4 and I have found that it can't focus at infinity but I found the minimum focus distance now is closer, about 14cm. How can I fix this issue? Is the sensor position adjustable?