[epiphone 335 pro vs epiphone dot-difference?]

I just checked at MF and both the Dot and the ES-335 Pro are the same price. I do not know why people would buy the Dot instead of the 335.

[No bridge pickup in middle position]

I, too, agree with Vomer. If both volumes are turned up and, in the middle position there is no sound from the bridge pickup, but works fine from the treble position, then the problem is likely in the switch. If otherwise, the pickup would not work at all, in any position. I would look at the selector switch first.

Hope this helps, and you find your problem!

Pete

[Epiphone Sheraton II Korea - bridge issue]

Thanks for the information! Welcome to the forum!