aleph5 temperature

recently i took some temperature measurments from my diy aleph 5.Results:eek:n the heatsink 61 deg cel on one channel and 66 deg cel on the other.On the mounting screw of IRFPs 91 deg cel on one channel and 96 deg cel on the other.given that it sounds great is their anything wrong whith those measurments i should worry about?
JOHN.