first things first guys,i am new to the site but its great for advice for problem solving.as for aldi chain saw 3 year guarante (where else would you get that) ive had one for a while and good value for money,as for use pretty good for the diy,ers cutting wood for fire,wood burner ect but for everyday use i would buy some thing abit more sturdy.if you do get one keep manual as back up service with aldi is **** hot when you you replacement parts,for the money i would buy one for sure 100%.
As for your makita no1 sharpen the chain-just bought new chainsaw sharpener on ebay £19.95+postage on ebay,easy setup, spare grinding wheel,easy to use,done 6 chains in 50mins every one perfect.just type in 16057carol in ebay search.
no2- you can turn the chain bar upside down, perfectly ok to do this to even out wear on the bar
no3-take the bar off lay on flat surface should be no twist,perfectly flat,check both sides,and rocking the bars twisted thats the problem
no4-check the chain tensioner is free and easy to adjust
no5-run saw without bar on
no6-just use proper chainsaw oil to oil chain,lots of people use engine oil but just burns the chain out quicker(ok if stuck)
no7-if bar is bent just replace it half the cost of new saw
Hope this helps should be one of these cheers topchippyles.ps any advice just let me know be glad to help