Should i skip chimera bloc 2

Chimera bloc 2 "cut to the bone" requires 5 internal crits with a german or jap tank. I could do wnalog mission with a russian tank for union with no problems. But for bloc i can't get more than 3-4crits. I have tried panthers, leo1, stb, chiri, even arty as i have only T10 arty left to research. I have been shooting spots where crew members are located but no crits are happening, the same as when i set enemy on fire and i get no crit hits. Obviously it is a skill issue. But should i pray to nrg or just skip this since this is the last mission left for chimera and new crew update will boost crits to 15% yet. I do not have prems like e25 or kpz50 so don't recommend those.

Edit:
I Just did it with panther in 6 battles, I also tried with chi-ri but mainly did Panther 1. Just needed better crew (I put 2 skill crew + vent directive)
I was extra lucky – Battle was not 15-3 like other times, I shot a tourist borasq 2 times when he drove by in different directions, i set him on fire and he did not have extinguiser

I had 0 skill crew. All 100% but gunner that had 1.5 skills (deadeye + consealment 29%)

My battle results –
Panther
Battle No. [Internal Crits, Dmg]

1 Internal crits – 0, dmg – 411
2 Internal crits – 0, dmg -614
3 Internal crits – 0, dmg -577
4 Internal crits – 1, dmg -1155
5 Internal crits – 1, dmg -1182
6 Internal crits – 6, dmg -2716

Chiri
1 Internal crits – 0, dmg -121
2 Internal crits – 0, dmg – 1388

Overall i tried this mission and was ready to give up if i couldn't do it in 30 more battles