Never done one like that but some things id try...
Smack outer hinge case.
Shock it as corrosion is your enemy!
Open window a bit and support weight so less strain on window pin when you smack it.
Next while smacking pin get someone to lift window then release weight wiggling window.
Next heat...
Unfortunately if you are here regularly then you see this stuff but can't do anything about it.
Mods or mod probably have a day job.
I've thought about setting up a forum myself but it's quite a lot of work and responsibility for little or no reward so a thankless job.
It's a common thing that...
Just that durable paints have resins that don't half stick.
Splash some on floor or uPVC and you soon find out how well they stick.
They also level out nice.
Longer drying though and longer recoat times.
Undercoat isn't always so smooth.
Needs a denib.
Quick drying and recoat times though.
There...
Take lid off machine.
There is nothing much inside so you will see pressure sensor with rubber tube going down. Pull pipe off pressure sensor and blow down tube to clear.
Push back on switch.
Never blow in switch though as very sensitive...
Some prefer surface mounted showers mixer and pipes now because of problems.
Other way is to install access panels.
Some have access from room wall behind.
Access is something you should consider
Through in my thoughts
Ask 10 people get 10 different answers of boiler recommendations.
We are nursing our 20 year old baxi combi on..
You could go on baxi website or Worcester website and look for local registered installers and get quote. That's my plan.
That should be a few hundred pounds...
I've just been readings online about your problem.
Could be the inlet valve solenoid which are around £25 if you can't find the blockage.
For the cost worth a punt?
Zinnser perma white is self priming although some surfaces like new plaster or old oil gloss etc would pay you to use a primer. A light sand with 180 grade so you don't scratch up or go easy with the 120 grade sandpaper and a wipe over with a damp microfibre cloth is all you need to do.
Read...
Gutter moves so mastic don't work.
The only way to fix is to remove the rubber and clean then refit.
As you are aware (I assume) The gutter you have is discontinued.
You can also buy rubber or take some from a different brand fitting and see if that works.
I think like me though you should be...
Any decent sanitary sealant should work fine.
Spray with mould spray every couple of months although I do ours every 6 months.
Ours has lasted about 8 years so far
Liquid soap is worst for scum.
I use bar soap but other family members use liquid soap.
Those shower sprays help and I have a mate with posh shower and he uses washing up liquid and toothbrush once a week to keep it clean.
If it's a busy shower then try those shower sprays and dare I say it...