@mujjo91,
Rapicon has 18% lube, costs 1300 for 4 litres (1% nitro)
Falcon has 16% lube, costs 175 for 1 litre (1% nitro)
Bear in mind what sanjay sir said about castor oil.
For decades I’ve used 75/25 methanol for running in, later switching to 80/20.
Since 3-4 years ago, I’ve been using 1-2% nitro, as the manual for my 1996 Super Tigre G40 said that a bit of nitro helps in starting, idling and transition from idle to full throttle. (It does)
See if you can source a 1 litre bottle of methanol. Mix 750ml of it with 250ml of castor oil. Forget nitro as it’ll be impossible to source.
Meanwhile order some Rapicon and/or Falcon. When it comes, put some in a glass bottle and add castor oil to bring the lube upto 25%. Check if it mixes permanently, or separates after sitting awhile!
Since you’ll not need much castor oil initially, get it from a chemist, though it will be costlier being of medicinal quality. Later you can search for cheaper castor oil.
Similarly, the methanol you get from a chemist will be a bit costly, as it will probably be LR quality (lab reagent). Later you can search for cheaper commercial methanol, ensuring lack of water content...
Aargh. Like a typical oldie I’m telling you stuff we did 50 years ago, and are still doing
Modern flyers may give you better inputs...
Edit
BTW, your topic heading “What is your suggestion??” can’t attract meaningful response as it doesn’t tell the reader anything. Do you like the change I made?