This is basically the way to approach the match, you are much better of pressuring Tager than playing defensively. That being said try to fight Tager at your maximum possible range with 5B 5C and 2C. Also, while ID after hells fang is okay I would just avoid using HF in a block string all together unless you have meter for a RC. Also, 2C Tager's sledge hammer and 2D it's easy to do and has huge counter hit hit stun, then follow with one of those massive 6C combo's.
The biggest problem I have with Tager is is basic block string A,B,C,D, Sledge (repeat). I know you can IB and interrupt attacks or ID the gaps, but My IB'ing is inconsistent at best and as always after you ID once or twice they will be watching for it. Does andy body have advice on escaping that string?