Hey Lucas, congrats on getting the new HL5 blade. Regarding the T05 on your BH, how long have you played with it? I know when I tried to Rakza 7 on it initially I had to do some slight calibers because the blade was a bit fast. This took like 1-2 hours.
If you're going to change to 05-Fx, the arc will be lower, but it's a lot higher compared to lots of other rubbers. I suggest you try the t05 for a bit longer because it just might take time for the rubber to soak into the blade. I've read on the Chinese forums that the New HL5 is closer in playing characteristics to the W968 while the old HL5 is closer to the W997. I don't know how true these statements are, but if that's the case you should be able to play with t05 on the BH since lots of players on the Chinese national team use the t05 on their BH with the HL5-like blade. (Note: others say there's not much of a difference between the old and the new). On a side note, one person on the forum said that their BH was more stable with the 05-Fx than the 05. And that blades like the viscaria (which is an ALC blade) had more stability when using t05. Again, I think it's just a matter of experimenting. I was planning to try t05, Rakza X, and andro grip on my BH to see what it would feel like. When I do, I'll definitely post my comments on it.