Oh don`t be so hard on Honda. They did make a light trials bike once. And we will never see anything as good as the 315 again since they are a green company now.
Funny, most 4t riders like the braking. Otherwise they would buy the 2 stroke. Reality is all 4 strokes are big and heavy. But my son at almost 6 foot 5 loves the 4t the way it is and will be buying a 2018 factory if they don't change it much.
We have probably about 15 4T`s in our club and never heard any complaints of cold stick. (The two stokes for sure) My son`s will slightly do it if it`s been sitting for a month. You might just try a brand change with the oil.
I usally do 450, seems to be that way for a couple of decades. On my '16 I started with Motul which worked great and gave a large slip zone. Currently back with ATF to get thant instant hit for the ups.
When I bought my 2016 250 it came with foldable levers. I removed them after the first ride. Bulky and no feel. If you move the m/c farther down the bars you get more leverage and it is harder to break a lever. S3 digits are what we run.
Our club started doing this for the electric bikes, so they could make it on one set of batteries. But it is cheating as the rider only completes one loop.
Trials riding the beta turns way better and smoother power. And you get a lot with the factory. Trail riding the Montesa. The Beta fits a larger person better.
The factory model is preferred. More power, less weight, more bling. What is overlooked is the 3 position handlebar mounts.
2016 Factory 250, will be getting 2018 Factory 250.
The 300 has more power, but the 250 has more zip which makes it feel lighter.
Buy the Factory, you get way more for your dollars. My buddy was being cheap and bought the standard model last year and was quite disappointed. His son rides a 2017 Factory 300. So he see`s the difference every time he goes riding. Not any real changes to the 2018, so the Factory is by far the better deal. My son also rides one and loves it.
Been using a van most of my life. (45 years in trials) Why spend money to have something in your way. You just need tie down mounts. The bike does not need to touch anything, and quit worrying about sacking the springs. You should be buying a new bike or replacing the springs anyways.
You could bypass the carb issue by laying the bike on its side, (Fuel on) pick it back up after about 15 seconds and you should see some fuel spilled. This should prime the cylinder with fuel. It should start within 3 kicks. If it is electrical, you just gave it a dose of too much fuel.
Knowing the carb model does nothing for your search. You could of taken your existing jets to any motorcycle shop and either they would have them or could order them. Googling Mikuni short hex takes about 10 seconds. By the way did you replace the plug yet as that might have been your real problem. Info at http://www.betausa.com/content/support
First it takes years of practice and lots of crashing. Find yourself a nice dirt ledge, click it up to 3rd gear, dump the clutch and jump. There you have crash number one. Next time get the front end up first.