Mushroom valve spring get out

[pooch]

Is there a trick to getting out the valve spring ?

It seems to catch on the mushroom head when bent as far as I would like to bend it ..

I think I am on the right track, do I first prise up spring then remove lower spring retainer .....then remove spring , then raise valve and tap down guide a bit, then remove guide retainer, then pull up or push from under to pop valve/ split guides ?

I did get one valve out today, but broke the lower guide extensions inside the spring, so must be doing something wrong....