I've tried 2 digit and 1 digit transposes as well.  No luck.  So I believe I cut 3/4/5 consecutive digits somewhere and then inserted 3/4/5 other digits.  The difference possible combinations start to explode towards infinity and I fear I've lost the coin forever.  Does any recovery service exist to write code that tries to recreate all this possibilities?  I know most of the private key, but do I know enough?