cat 301.8 problems are they all linked

Thank you to all that helped me on the drive questions and all is good with the drive.

Now that the pipes are relocated I thought that the blade would be stronger. It goes up and down ok but it lacks strength to lift the machine.

The extending undercarriage does not extend, when I press the button and lower the blade the carriage just twitches.

When the machine gets warmer the slew also gets slower but the jib is unaffected. Slew motor was changed about a 18 months ago so hope it is not that.

I am a new owner of a money pit so please be gentle.:Banghead