Before doing any carb adjustments, readjust your friction roller settings.
Since you have a taller tire, the roller is putting more pressure upon it.
Now if that doesn't cure the bog, you might want to adjust your carburetor.....or not.
Which engine do you have?
The cheapest, easiest thing to do is install a new spark plug, properly gapped.
Then check the carburetor.
The carb might be running too rich.
Does it have any adjustable screws?
If it doesn't, start the engine and hope it runs right.
If it does have adjustment screws, jack up the bike, so the rear tire off the ground.
It'd be nice if you could do your adjustments next to a steep hill.
That way, you can do a test ride after each adjustment.
This is a slow, tedious procedure.
Ask me how I know this.
With engine off, turn the adjustment screw(s) GENTLY, clockwise until they bottom out.
Be sure to count the number of turns it takes the screw(s) to bottom out.
You need this bit of information, in case you forget where you started .
Now turn the carb's adjustment screws back to its original setting.
Turn the engine on and warm it up a few minutes.
Rev the engine occasionally, so the plug doesn't foul up.
1)Turn the low speed screw clockwise in 1/8" .
2)Rev the engine, to see if it sounds crispier.
3)Drop the rear tire onto the ground.
4)Jump on your bike and ride up the steep hill.
5)You'll know in less than four seconds, if your engine still bogs.
If there's no low-end bog, you're done.
If the engine's still bogging, get back to your work area.
Repeat steps 1-5, until the bog disappears.
Then move on to adjust your high-speed adjustment.
Repeat steps 1-3.
6)Instead of a steep hill, find a long stretch of road,
maybe with a slight incline.
7)Run your bike with full throttle for 30 seconds or longer.
8)IMMEDIATELY turn off the engine without allowing it to idle.
9)Now pedal back to your work area.
10)Do NOT run the engine.
11)Take a lunch break or take the day off.
12)You'll need to remove the spark plug on a COLD engine to check its color at the electrode gap.
A well-known member had advised others to remove the sparkplug IMMEDIATELY after you turn off the engine.
That is ABSOLUTELY the worst thing you can do.
You can ruin the cylinder head's sparkplug threads if you remove a hot sparkplug.
13)Inspect the COLD sparkplug after removal.
This will show how your engine is running at high speed.
If it's chocolate brown and no bogging, your work is done.
If it's sooty black, you're running rich.
If it's white, you're running lean.
A black or white indication means
you need to adjust your high-speed adjustment screw.
14)If it's black, turn your screw 1/4" clockwise.
Make another high-speed run.
IMMEDIATELY kill the engine without allowing it to idle.
Repeat steps 6-13.
If it's chocolate brown, you're done.
If it's still sooty black, repeat steps 6-13.
Repeat until color is brown.
If spark plug color is white,
repeat steps 6-13.
Turn adjustment screw 1/4" counter clockwise.
Repeat step 13.
Keep repeating the steps until the sparkplug color turns brown.
When the plug reads brown, you're done.
FWIW, it's harder to "read" the spark plug's color, if the plug is new.
BTW, you can find other ways of carb adjustments on Youtube and Google.
