I got a v4 and used only alternative vias for the cd/dvd rom controller. I did in a really wacky way to prevent troubles down the road and it paid off recently. I put H and C at the alternative point near the center of the board. All the rest A, B, D, G, I are at the points under the cd/dvd rom controller chip. Now the pay off I recently had wire H pop off and due to my setup it was impossible for it to contact one of the other wires and kill my ps2. So far my Magic 3.1 is a dream chip and works perfectly on cdr, dvd to cdr rip, and dvd9. Good luck.
JAP 60GB PS3 (release date)
37000 L V7 Ocean Blue Matrix Infinity BB Navi (.32)
30001-R V4R Magic ICE 91f3+ PS2 Linux (2.4.1)
10000 V0 No Mod, PSP-1000 1.0 FW 100K release model
PS2 Linux Kit (BB Navigator Installed)
Scph-5501 Stealth, All Sega Systems
Cube with Save, Xbox 1.0 Modded