Julie, If you have one of those little screwdrivers that computer folks use, they have a magnet on the end. If not try to find any little magnet. It helps when you take out the bearings. You can call Brower and they will send new ones Steve.
You don't have to lift the drum very high to get it off the slot where the turning wheel is.
I would not use a bulb higher than 60 degrees. If you have turned the dial on the heater, and it will not go above 98, you may have a bad thermostat, you need to call the place where you purchased it and see if they will send a new one. The 60 watt bulb is enough to get the temp way above that. I had mine up to 110 when I first got it and was trying to get it regulated. It takes a while to get it to change so move the dial and wait at least 30-40 minutes.
You can make a cozy for the tub out of bubble wrap and simply fasten it with tape. Make it just big enough to cover the tub so it does not block the air circulation at the bottom.
This time of year you may not have the problem I did with mine and that was getting humidity up during the last few days. I found that the synthetic shameys (sp) they sell at the auto stores work well. They hold the water better than a sponge.