Samoa's scurm issues are all technical. This is essentially the same pack who scrummed against SAF in the World Cup and had parity with them. The problem for the forwards is that we have lost the excellent forwards coach we had for the World Cup who is now ironically with the Blues (whose forwards are average to be honest). We also lost our defensive coach to the All Blacks. Against the Boks, the scrum is less of a worry in my view to the defensive line, especially the chase line on kicks which is quite ragged at the moment.
The vastly superior Bok backline will cause a lot of problems for the Manu if they make the easy yards the Italians and Scots did in the last 2 tests.
Bigger than all these problems though is the ref, lets hope that he doesn't give SAF the rub of the green at every opportunity and blows small infringements out of proportion due to stereotyping.
I always like the ref who reffed the game between Samoa/Italy as he strikes me as a guy who just tries to ref what's in front of him. Northern Hemisphere refs are the biggest ***** when it comes to pinging the **** out of island teams for stuff they let slide against the bigger nations. Fingers crossed we don't have one of these little pricks.