Hey Diesel,
Yes, all of us long-term kanopool miners lost months of shares when the N (number of shares) changed from 5Nd (5 times current network diff) to just 3 days some time back. Kano explained why, and with your miners off you lost all your shares after 3 days once that change happened.
Bummer, but it is the way if a smaller pool is to survive.
Well that sux. Guess I should have consulted here before disconnecting; but then again it would not have changed my decision - the 220V circuit powering the miners had to go for another piece of equipment and offices were being added and the fan noise would have been unacceptable. So I didn't really have a choice. I could have spun up another location but my miners were already only marginally profitable under "normal" luck so start-up expenses would have tilted everything back to unprofitable and it would not have been worth it.
Guess I am just out 800-900$
Not really.
Assuming 5ND was kept instead of changed to 3 days in Jan:
Say you had 54TH mining end of Feb, and turned them off March 1st, ramp down time was around 146 days in Jan, it would have been more in March, but for arguments sake lets keep it the same.
Block was found on 2th May, which is 81 days after you turned off your miners. So by then you would have ramped down by at least 55% or roughly 24TH.
Pool N avg was 7.45PH when the block was found and the block was worth 8.31423879 BTC
So your pool reward percentage would have been 0.024/7.45*100 which equals 0.322147651%
That's 8.31423879 x 0.322147651% or 0.026784125 BTC
BTC price was aprox $9750 so the most you could have lost was pretty much $261
If you would have kept mining the entire time after the switch to 3 days you would have made 0.05356825 or around $522 when the block was found in May