0005812: Bigger than average dwarves refuse to equip big weapons

I was playing around with EOC's example above, and after a bunch of testing, there is a pretty easy workaround to this bug (sorry if this is already common knowledge.) The 2 handed check seems to trigger purely off of the last BODY_SIZE you have under that caste, checking whether it is above the 62500 needed for weapons like the 2H Sword, Maul, and Pike. So, after your BODY_SIZE modifiers you want for your dwarves, you can put [BODY_SIZE:2000:0:62500] where (BODY_SIZE|<year>|<day>|<average size>).

This triggers your average dwarf to grow to about 62500 at the pointless age of 2000 years old which, let's be honest, if they made it that far, maybe they deserve the height increase. But it also means that it shouldn't actually change anything about the game with the singular exception that now all dwarves of the caste you've edited can now use multigrasp on these large weapons (unless you somehow get a 2000-year-old dwarf, which I'm pretty sure is impossible at current state). This change does seem to work in saved games too. Example based off of EOC's example below:

    [CASTE:FEMALE]
        The gender tag lets it know how breeding works.
        [FEMALE]
        [MULTIPLE_LITTER_RARE]
        To add beards, put square brackets around the following:
        BODY_DETAIL_PLAN:FACIAL_HAIR_TISSUE_LAYERS
            [BODY_SIZE:0:0:3000]
            [BODY_SIZE:1:168:7500]
            [BODY_SIZE:5:0:15000] These six sizes are normal aging size increases.
            [BODY_SIZE:12:0:45000] I added a few more for my own personal flavor, but they function the same as the basic 3.
            [BODY_SIZE:16:0:60000]
            [BODY_SIZE:90:0:50000]
            [BODY_SIZE:2000:0:62500] This is the line that makes 2 handed weapons useable.
    [CASTE:MALE]
        [MALE]
        [SET_BP_GROUP:BY_TYPE:LOWERBODY][BP_ADD_TYPE:GELDABLE]
        [BODY_DETAIL_PLAN:FACIAL_HAIR_TISSUE_LAYERS]
            [BODY_SIZE:0:0:3000]
            [BODY_SIZE:1:168:7500]
            [BODY_SIZE:5:0:15000]
            [BODY_SIZE:12:0:45000]
            [BODY_SIZE:16:0:60000]
            [BODY_SIZE:90:0:50000]
            [BODY_SIZE:2000:0:62400] The size number here (62400 instead of 62500) means no male dwarves can use 2H weapons, their caste won't allow it.

There -does- still seem to be a glitch here regardless of my workaround: when the flag / trigger enables multigrasp for larger weapons, it does so regardless of how big your dwarf actually is. I.E. it's just a caste check, having no data taken from any individual dwarf. So Shortast McDwarf who's body size is only 30000 won't be able to wield a standard battle axe correctly (I think he might have to 2 hand it?) but he can sure equip that massive two-handed sword (again, multigrasped.)

After looking at this a bit further, I actually think this problem was already happening with smaller weapons and minuscule dwarves. My 2-year-old dwarf (who for the purposes of testing magically became an adult, congrats kid) who's size is 6760 right now can apparently two-hand that battle axe and two-handed sword as well, because the 2 handed check has triggered for all weapons under 62500 size.