Learning to ride the roller is not so complicated as it looks. Study the the pics and notice how I place the roller - ab. 8" from the wall. When you mount the bike correctly and start cycling you will always find help in your right/left elbow to obtain balance.
In the beginning set the gears to 32x18 or 32x21, just for less resistance. It's important that you achieve smooth cadence and get a feeling of control. You can always go for heavier gears later. Used about a week before I got the good feeling and could use the roller correctly.
To obtain better comfort during training install an electric fan. You may also have a fan as an add-on to the roller. Feeling the breeze and coolness do adjust the HR, the water consumption and the overall performance.
This is the second year I use the PolyMyte. Had to change tyres - mounted Michelin 1.25 slick tyres pumped with 70 psi. To my surprise they increased resistance.
Experienced that Kreitler Rollers Inc. kept their promises - The Bitterness Of Poor Quality Remains Long After The Sweetness Of Low Price Is Forgotten!