Marantz SR 6005, Sky and lip sync problems

[Cactussed]

Guys

Just changed back from BT to SKY and, when running the HDMI from the Sky box into the amp then to TV, I am getting awful delay on sound. Never had the issue on the BT box and the SKY only allows 200ms of adjustment.
The Amp has a lip sync feature which is doing naff all.
Tried different HDMI leads to no avail.

Any ideas?

[Cactussed]

Ah, good call. Shall check.

[Cactussed]

Well I ended up running a separate optical audio from sky to the amp and seems to have resolved itself thankfully.