Outer Limits 4x4 Board

Gday
One of the slider spigots is seized its all rusty suprisingly the rubber boot is in good nick so i dont know why its rusted.
anyway tried crc, heat, hammer and swearing at it but no luck
any suggestions ? can you buy just the sliding mechanism??
any help greatly appreciated

try more heat and a vise... dull cherry not orange..

got it using the vice had to push it in before i could pull it out

let me know if u want a replacment caliper make an offer...

the cost of replacement bolts is stupid and i've had to buy a few of them (of course genuine only!). if you can find a good 2nd hand one its better than buying 8 bolts (to do both f & r both sides) for like $120. the rubber boot may look fine but it doesnt stop the mud and sand getting in