Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Neither Mega Sableye nor Wynaut and wobb should be tested at all because they don't contribute to Stall being nearly unbreakable they way Gothitelle does by removing from the opposing team *without fail* at least one of so many mons that are great vs stall.
even without M-sableye, goth stall is...
Sorry i was a bit vague, i meant keep heal bell on clef, since it's obv vital to the team and just change wish+protect for the moves i suggested. But yeah, heatran has a lot more utility, also vs volcarona and even thundurus-i; and clefable is quite good with wish+'tect.
I just noticed that...
Looking solid! (aurocords here)
So you're oml it's too ez :]
The replays are great and I really like the team, I would definitely use that hah.
You could consider alomomola in place of heatran and maybe get flamethrower/calm mind/t-wave+moonlight or on clef, in case you want to take some...