[Imp]

Found a bit of time heres your scenerio 227 back map & BMPs fixed.
HQ what a nightmare only solution I could do is its now invisible you cant access it thought that should not be a problem its in the rear area.

Some points.
1) I hope you have restored default OOBs using manage OOB sets to stop further problems in the future.
2) Leave HQ alone if you want to do anything with it reduce speed to zero & stick near map edge it represents your link to the outside world as in arty parks etc in scenerio 226 you turned it into a tank. This means any sensible player will not use it in combat & risk losing first order of the day is hide it incase enemy has air support.
3) Not sure if you have but do NOT cross attach units to HQ its automatic anyway supose I am saying leave it alone so you dont break it.
4) Buying order as mentioned before forget where FOOs should be buy straight after HQ for ease of finding & SEAD aircraft should always be the first planes purchased. If you want to get clever when have large amounts of arty buy a few to target AAA assets then air followed by the rest of the arty maximises planes chances of being effective. Not important but I would generally buy infantry & there vehicles before armour so it only opfires if they cant deal with it.

On scenerio 226 had a quick look assault with most of the brigades arty by the looks of it do not have access to my OBAT data at present but whats it representing? If do text for suggest mention turn fast arty on for those that dont as assume big barrage at start.
For my own intrest integral to the unit what arty & AA assets does your book say they should have from the top of my head Mortar section looks right & normally 18 Gvozdika SP122mm, handily they can be represented off map by 122mm howitzers as same gun.
AA think there are 8 SAM units think it should be 6 & only a unit facing NATO would have the luxury of all high end normally 4-2 mix though thinking early 80s here if I remember right, the Chinese air force is not great so would not expect top equipment. If you do more vs China might also consider using BTRs instead of BMPs probably oldest model available.
Just some thoughts to consider as trying to be realistic I think & off the top of my head.
Also noticed again have trucks etc for no purpose would suggset you stop adding none combative units they serve no purpose in game player will just use as trucks or more likely hide on turn 1. Silly players might just use them to draw fire.