Hi folks! I picked up two old AI Hydra 1st Gen recently for cheap because Royal Blue channel doesnt work, so I decided to find out if I could repair it. After several tests, find that the problem is the burned out LED, so I have to replace them. I will need some XT-E Royal Blue LEDs, where can i buy it? Must i use the same XT-E LED or could i use an XP-G2 or other compatible LED?? Also, I've read that is possible upgrade the old LEDs, which ones can i upgrade? Thanks in advance!