dark ales finishing too dry

[Braufather]

For some reason my last 3 o 4 dark ambers have come out much more drier than usual. ive gradually been ramping up mash temp from 65 to around 68/69 to no effect . ive used US 05 a couple of times and also liberty bell. the recipes l based around Cwtch, 5am saint and slot machine. At a bit of a loss as to the cause. I have done these a couple in previous years with no issue and same process?

any ideas anyone?

 

[Pennine]

Maybe start at 67 or 68 and then do a mashout. Other ideas would be to add more crystal malt or just up the grainbill 20%.