Here's what I know I need to do to get tren to methyltrienelone-
"convert tren to the 3-oxime with hydroxylamine hydrochloride in pyridine
conversion to the 17-ketone by oppenauer oxidation
grignard reaction to make make the 17a-methyl,17b-OH
removal of oxime protecting group"
-Patrick Arnold's recipe
I've figured out how to do one and two so far, I'm still researching how to perform steps 3 & 4. Since you're so great with organic chemistry why don't you share some wisdom?
Step 3: You must conduct the reaction in an inert gas/air free environment. Grignard reagents are extremely sensitive moisture. You must use tetrahydrofuran (diethyl ether may be problematic as it can be used to make other illegal products that LE is more inclined to follow). I wouldn't go the Grignard route. An Sn2 reaction after proper preparation would likely give a lower yield, but it would be an easier home brew. It would require less know how and more readily available reagents. Grignard can be explosive. So, ATF alert there.
Step 4: Removal of a protecting group with commercially available products typically ends with shitty yields. The best chemists get 75%. Most protecting groups can be eliminated via acids or oxidation (which you cant use for this prep)
I am not trying to be an ass. I know I may have come off that way, but stereospecific addition of CH3 is difficult for a home brew. Plus, you wouldn't know what you had unless you knew everything about the finished product--melting points, solubility, and a hundred other things. You would need to use IR spectroscopy or an NMR to determine for sure.
It is such a dangerous compound, and getting to the point of having a dangerous compound could be hazardous as well...physically, and legally. I am not trying to be your dad, but I don't see the value in it. Not that your values are mine, but while it is doable, is it worth it? There wont be a trumpet and cloud splitting sunlight shining on the finished product--it will just be some residue that you won't likely know its constituency.
I cannot help any further, but wish you the best of luck.