Well I finally did my first driver swap today! I have a Romisen RC-2R4 NW that I bought from Shiningbeam several months ago. I like the tint of the emmiter but on high it was only pulling .8 amps and the PWM on low was almost a strobe. Despite this I really liked the light and used it alot (on high) around the house at night. I just got done installing a 1.4 amp 3-mode driver from Shiningbeam and I couldn’t be happier with the light now. The driver instillation wasn’t bad at all but I definitly need to get a higher wattage iron for soldering the driver to the pill, the heat just gets sucked out so fast. Now I have to order a 2.8 amp driver for my HD2010 to get that working like I want.
Great! Now make sure you beef up that 2.8A driver with a couple more AMC's to bump it to 3.5A! (Search stacking AMC's or 7135's) That HD2010 needs (read "deserves") to be pushed hard! Or just ask Erik to sell you a custom 3.5A driver.
Note: you might also try a butane pencil torch for harder to heat uses.
-Garry
And congratulations on your first self customised flashlight. It is so gratifying when it works like you want it to and you just feel happier using the flashlight. I love all my modded light. Thats why a seldom sell any I guess.
I sure hope you have fun here, I know I do 
Congratulations on the driver swap. It’s a great feeling fixing it yourself.
The pencil torch is a great idea. Pretin the edge of the pill before adding the led and driver.