Just make sure your bubbling stone is base/methanol-resistant and doesn't start to dissolve while you're gassing... ::)
About cooling the methylamine(g) prior to bubbling it through solvent (may I quote Terbium at this point):
"Calcium chloride will definitely absorb the methylamine or any amine. I would be wary of silica also. NaOH pellets would be best for drying methylamine gas. Bubbling the methylamine gas through a saturated NaOH solution should also work. You can even get away without any drying if you let the gas cool through a long neck flask or reflux condensor."
terbium
As for the temperature: I don't believe that methanol at 55°C can take up more gas than at lower temperatures. Especially not if you heat MeOH almost to its boiling point. Most likely the gas was made too fast and/or bubbled too fast.
Gases simply have a lower solubility at higher temps. Thats a fact.
So the error most likely wasn't the temperature of the methanol but rather something else...
(try gassing at such a rate that bubbles only appear every 20-30 seconds, and prepare to wait hours before it is finished)
And don't gas into an open vessel like a beaker: better use a 2-neck flask with a condenser in the main neck and bubbler tube in side neck. The methylamine won't dissolve completely while bubbling through the methanol, but will make a methylamine(g) atmosphere above the MeOH surface and slowly migrate/dissolve into it. Only important thing is that the vessel you use can hold back gases, and doesn't allow them to escape directly after leaving the MeOH as bubbles. Therefore the 2-neck RBF and condenser.
Good example for proper gassing setup: Post 503373 (https://www.thevespiary.org/talk/index.php?topic=10960.msg50337300#msg50337300)
(r2e3: "MeNH2 gas from MeNH2.HCl using NaOH", Newbee Forum)
indole_amine
Most of the questions concerning CH3NH2 posed in Post 529119 (https://www.thevespiary.org/talk/index.php?topic=10242.msg52911900#msg52911900)
(Bandil: "Preparation of anhydrous MeNH2 / HCl etc.", Newbee Forum) can be answered by finding and reading:
Z physik Chem 128 399 (1927)
J Phys Chem 25 160, 204, 605 & 721 (1921)
J Phys Chem 26 256 & 349 (1922)
These citations can bee found in the file from Post 480133 (missing)
(lugh: "Happy New Year", Newbee Forum) ;)