Fired up the minibrute last night to find the tuning out over the full range of octaves. When i originally got the minibrute the tuning was stable after warm up and i had the tune knob set at 11 o'clock. Only the top octave would be slightly sharp.
Now i find i have to tune the brute slightly everytime i hit the transpose buttons and i now have the tuning knob mainly at 9 o'clock.
How easy is it to calibrate the tuning and do i need to use a plastic, rather than metal, 2mm screwdriver just to eliminate the issue of shorting out the brute.
One last thing it has been extremely hot down here in the south of england and just wondered if this could be factor in the problem im having.
Any help will be greatly appreciated.