I guess some of the weird issues were caused by many mods and utility software I installed for Il2 such as stab etc. I just did a fresh fresh install. Patched up to 4.11.1 and then HSFX 6.017. Then put in DCG. Everything works perfectly. After that, instead of putting in whole bunch of planes at once, I just insert one a time. I started with pony 30. Just change those 3 files. Surprisingly, everything works charm this time. The new plane spawned correctly. No pink cowlings, no invalid integers and when mission starts in-flight, the engine is running instead of a dead engine. So I know for sure that with basic HSFX and DCG, p51-30 works. Next step, I'll add other planes to see if anything would go wrong. Also, I found out my stats got reset cuz I had the option "Stats reset upon death" checked. I initially thought as long as you refly without quitting the campaing, I am not counted as dead. A couple of other quick questions though:
1. I was flying DCG pacific campaign. There were a few missions where the AI CAP flights were placed too far north-east. The Japanese strikes that came from south west were totally ignored by them. They did nothing when the carrier fleet was wreaked by the Japanese bombers. Is there any way I can adjust the waypoints of these flights to put them in the correct area? Btw, these are AI flights
2. Is there a way to turn off chute for Japanese pilots? I thought there is an option to do that. Don't mean to be cruel to Japanese pilots, just want to have as historically accurate as possible.