I have the 3x3x5, but noth the 3x3x7. Isn't it the same puzzle, with another pair of layers to complete? My 3x3x5 solves almost the same as my 3x3x4...
1) Restore to a 3x3 and Fix middle layer
2) Solve as a 4x4
3) Fix Parity.
Please take off topic discussion off this forum. Thanks.