Frigate® resistors R15 and R31 are warm

Good day,
I assembled Frigate and I am testing it right now. I observed that anode resistors R15 and R31 are warming up during operation of the amplifier. Is this normal?
Thank you in advance.
paulc
I assembled Frigate and I am testing it right now. I observed that anode resistors R15 and R31 are warming up during operation of the amplifier. Is this normal?
Thank you in advance.
paulc