Carbs with crankcase oil injection showed me more about storage with modern fuels,, more than injection did for me. So I carried forward my system and has worked so far.
I use 10 liters of summer (better chance of non-eth content) non-eth pump fuel (no premix, empty the seasonal pre-mix fuel) and a whole bottle of Techron (60 liters worth, believe this helps my injectors while soaking between runs but just theory). Wire my oil pump on full (simple hook and bend of some aluminum tig rod or something. It stays wired open for the summer.
Open up the shop and start the fan lol. Start and just leave the engine idle. Check with hand on tunnel until it is pretty warm lol. Then a few blips to lube the pistons and piston pin bearing real good, spin the track a bit, move the belt up and down the sheaves a bit cycle the clutches a few times and your drive (chain or belt).
Then, shut it down and drop it off the stand. Then when the smoke clears I do the bouncy bouncy, pull over and carve in both directions and vroom vroom thing lol to keep the suspention stuff free (and it's fun lol).
Drain and refill with fresh for next season. Use what is left for the lawnmower or gen set next summer if both are Honda lol.
About Aug., I use this time to prep physically and mentally lol for the season too, so sometimes it becomes every 2 weeks. I do a dozen or so dead lifts at the back bumper. Lift and drop, lift and drop lol and progress to lift and throw 45 degrees, lift and throw lol. Then squats at the front. Bend the knees and lift and drop, lift and drop lol.
Final thing is the best thing you can do for your sled. Isometric chair combined with a roll-a-weight-up-and-down on an old set of bars.
You do all that and your sled will be ready.
This method requires good neighbors lol. One neighborhood newbie phoned the fire department once lol. It took a barby and beer to explain the importance of this. He has since become a sledder and adds to the summer 'squito control in our neighborhood.