I'm new here so first, let me say hi to everybody!

Now, onto my story. I bought a CM Storm Quickfire XT with brown switches a week or two ago. It's my very first mech keyboard. I must say, I really really love the feel when typing or gaming. Nothing like the mushy membrane keyboard I previously owned. Overall, everything's perfect.
However, there's a small issue that's really not a fault of the keyboard but rather the purpose I use it for. In my daily work, I'm using a CAD software that relies on constantly having to put my pinky finger on the left CTRL button for navigating inside the workspace. The problem is that since the keycap is square and sharp, my pinky begins to hurt after 10-15 min of work. I press the CTRL button with the left side of my pinky as I need to have my thumb on ALT at the same time too and that's the most comfortable way to rest my pinky. The actual point where it hurts is where the last phalanges of my pinky join (there's a bulge there) and that's the precise spot where my pinky starts to hurt.
My previous keyboard, Modecom MC-WGC1 VOLCANO, had rounded off keycaps tops on the bottom row where the CTRL, ALT etc. keys are, as seen from this image:

Because of the rounded tops I never experianced any pain in my pinky when using that keyboard. What can I do to alleviate this? Are there any rounded top keycaps that I could buy to replace the CTRL key? Or maybe some that don't have such sharp edges? I found a website that apparently has rounded keycaps as seen on this link -
http://keycapsdirect.com/key-caps.php (Check the "DSA FAMILY" diagram). But browsing around there I couldn't find them.
Any help is greatly appreciated as I really love my Quickfire XT but this little thing takes away from the joy of using it to the point that I think about having two keyboards on my desk to use depending on whether I work in the CAD software or typing/gaming.