smithed

I posted previously with a IH 460 power steering issue, well I no longer have that problem cuz I sold the rig. just bought a MF 35 (not sure of year) and the 3 pt takes a while to work. After letting the tractor run about 5 min it then will lift and operate the back blade on it. Fluid levels are fine but the previous owner states it just needs to warm up before it will move it. Once warm the blade goes up and down without any issues. Why does it take so long to operate? Tractor has a bucket on the front and operating that there are no issues. Any help will be appreciated