After getting the dimensions of the transferport, I opened her up. It's only 4 bolts. The most rear and the most forward. Leave the middle ones by the bridge alone. Nothing to really fall out or jump at you. Don't be shy.
Only watch that the 2 o-rings on either side of the transferport are still in there before you assemble.
I made the Transfer port 0.062". I grabbed a 1/16 drill bit, close enough for government work, and in 2 seconds I used my dremmel tool to bore it out.
With 8.3 gr pellets, it went from 490 to 630 fps. I don' care about the loss in number of shots. I will chrony
later but I am still probably getting over 30. To fill that little tank takes really little air and no time.
If you are like me and you HATE left side bolts on a pistol, it takes another 3 minutes to switch the bolt to the other side. Unscrew the bolt post, unscrew the stop plate and reverse it, flip the bolt to the right, screw the post on it and go to town.
TO REVESRE THE Coking BOLT see pics below.
Now its like I have an R7 in my back pocket hehehe
Here is a chrony string after the transformation
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