(Reuters) - Vesa Vihavainen is worried. Merivaara, his Finnish-based hospital bed-making business, is struggling - just like the economy that Finns once held up to debt-laden Greeks as a model of what national thrift can achieve. Weak sales mean Merivaara has had to lay off staff as Finland fails to find an exit from a two-year recession. That spiral of lost jobs and income is also wrecking the country's cherished reputation for sound public finances. Finland's school-masterly ...