Hope I am not to late! We've been touring around Europe & Morocco for almost 16 months now and we just left Finland yesterday, in fact we are sitting on a ferry now back to Germany. :-) We have the MSR International stove (over 6 years now) and have had zero issues with it or getting fuel for it. We carry two medium size fuel bottles and have never had a problem buying/paying less than 2 Euros to fill them up. When we flew from the US, I disassembled and cleaned our stove and put it in a plastic bag (disassembled) and I left open our fuel two bottles a couple days before flying so there were no fumes. I left the tops off and put them in our bike bottle cages for the flight and again no issues. Forget about buying white gas in Europe!!!! We normally use the lowest grade fuel and again never an issue.
If you are coming to Finland, bring with you a mosquito head net and some Deep Woods Off or similar with lots of DEET as well as some coils to burn in and around your tent. The mosquitoes are unreal right now!!! If you have any questions please feel free to email me.
Also, I would like to add, bring something to carry extra water in (ie MSR Dromedary bag or similar) and either drops or pump/filter. We each can carry 3 bottles of water on our bikes, but sometimes that was not even enough. It has been very warm over here and to be honest, some of our best weather to date was in the Arctic Circle. The towns can be spread out sometimes (we went once 130km between towns), so you will need to get your own water; especially, if you plan on doing any wild camping (which is totally legal here).