I have a microclimate ministat 100, I have it on a ceramic bulb, for the past few days it's all be fine, top end heat was around 94 max, but this morning I looked and it was at 97.8 :-o I can't work out why it keeps fluctuating when i'm changing nothing. Please can anyone advise on a better thermostat I can use, or give any ideas what the issue might be?