I just saw this thread and wanted to add in. I as of tonight have two successful oil based winny brews.
First I have used micronized stanozolol powder so that might be part of it.
I use this ratio recipe
20% bb
1% ba, and this is important I have read that using 2% ba can cause holding issues after the brew cools so only 1%!
15% guiaicol, this is only slightly higher than your stated ratio so maybe with 1%ba I could do 10% guaiacol, idk.
Then for carrier is do
50/50 ethyl oleate and MCT.
Now I have only done a small 40ml brew and a second 80ml brew. So the smaller batch might have some influence, idk.
I am getting itchy to try brewing my "regular" stanozolol powder and see if it behaves differently than the micronized stuff.
And FYI I did my brew on a stove top cooking oil bath (think water bath but with cooking oil so I can go past boiling temp) I only go up to about 275f and it is only heated for about thirty minutes total. I start with carrier blend in one beaker and bb, guiaicol, ba and powder in a separate beaker. I heat until it is almost clear, usually around 250-275 f then I stir and that last bit goes clear. I then combine the two beakers. I keep stiring every couple of minutes. I only keep the heat on for about ten to 15 minutes after they are combined. Then I simply turn off the stove. I have a sterilized cooking sheet I place on top of the pan that still has the cooking oil and beaker in it. I place a towel on top of the sheet just as an added insulation. This part I think is very important, it is a SLOW cool down. I keep stiring every five minutes at least.
I let it sit overnight to make sure and yeah so far both batches held fine. Again the slow cool down is something I started recently with dhb cyp and I think it is important because it keeps the brew cooling at a consistent rate vs the top going cool first and getting ten degrees cooler than the bottom, or more.
Something about what I did there seems to produce a consistent product and quite frankly I don't think it is any harder to work with vs some other hormone. Keep in mind I am using micronized stanozolol powder.